972646 has 4 divisors (see below), whose sum is σ = 1458972. Its totient is φ = 486322.

The previous prime is 972637. The next prime is 972649. The reversal of 972646 is 646279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646279 = 37 ⋅17467.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243160 + ... + 243163.

It is an arithmetic number, because the mean of its divisors is an integer number (364743).

2⁹⁷²⁶⁴⁶ is an apocalyptic number.

972646 is a deficient number, since it is larger than the sum of its proper divisors (486326).

972646 is a wasteful number, since it uses less digits than its factorization.

972646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486325.

The product of its digits is 18144, while the sum is 34.

The square root of 972646 is about 986.2281683262. The cubic root of 972646 is about 99.0797575145.

The spelling of 972646 in words is "nine hundred seventy-two thousand, six hundred forty-six".